Scraper attachment for tractors



Oct. 11, 1932. 5 NOOY 1,882,244

SCRAPER ATTACHMENT FOR TRACTORS Filed Feb. 29,. 1932 maz "' scraper blade, a

Patented Oct. 11

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Jorm A. DE NooY, or. PELLA,,IOWA I SCRAPER ATTAcfit rmv'r r03 rRActroRs' Application filed February 29, 1932. Serial No. 595,866.

The object of my invention is toprovide a simple, durable and inexpensive scraper attachment for tractor wheels which may be easily and quickly attached to the tractor, and

particularly adapted tobe'used in connection with that type of tractor wheels having two circumferential rows of lugs, said rowsbeing spaced apart whereby the scraper may be operated between the rows of lugs for cleaning the periphery of the wheels and said lugs.

More specifically it is the object of my invention-to provide an improved scraper ate tachment having a scraper blade formed of two members, one slidably mounted on the other with brakable means for supporting.

the blades in a normal working position in such manner that if the blade encounters.

frozen earth or other obstacles clingingto the wheel, the scraper blademay be moved longitudinally of its supporting member without injury to the blade,thereby allowlng the blade to free itself of obstacles.

A further object is to provide in a scraper attachment for tractors employing a scraper blade improved means for detachably mounting the scraperblade to a suitable supporting member carried by the tractor. v I

My invention consists in the construction, arrangement and combination of the various 9. parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawing, 111 which: I

Figure 1 illustrates a segmental section of a tractor wheel and a portion of the mud guard carried thereby showing the manner in which my improved scraper blade is applied.

Figure 2 is a detail side elevation of the portion of the blade being shown in section. a

Figure 3 is a bottom view of Figure 2.

Figure 4 is a back view of the scraper sup- 7 porting bracket. 1

Figure 5 is an enlarged detail sectional view taken on the line 5-5 of Figure 2.

Referring to the accompanying drawing, I have used the reference numeral 10 to indicate the rim of a traction wheel 11, and 12 indicates the lower end of the mud guard receiving the bar 24; V Supported between the edges of the memcarried by the tractorframe. Said guard includes a curved plate 13 having at its lower edge a reinforcing angle iron 14. One of the flanges of said angle iron extends forwardly toward the rim 10. The rim 10 is provided with two spaced circumferential rows of lugs 15 which are spaced apart inthe usual manner. a Y I My improved scraper comprises a bracket 16 formed of a pair of clamp members 17'. Each of saidclamps comprises'a member 18 having a hookrportion 19 at one end to engage the inwardly extending flange of the angle iron 14, anda coacting clamp member 20 having one end designed to engage the lower endof the member 13, the lower ends of the members 18 and 20 being curved to form recesses 21, said recesses being designed to carry a bolt or pivot 22. I Y v v A bo1t23 is provided for each of the clamps for clampingthe members 18 and 20 to the angle iron 14 and to the lower end of the member 13, and for clamping the pivot member 22in position in the manner clearly illustrated. g The members .17 are spaced aparta dis tance equal to the width of the scraper bar 24 which is pivotally mounted thereto at its upper end. The member has a nut 25 for holding the bolt 22 in place, and at the same time provide means fordrawing the members 17 snugly'against the edges of the bar 24 totake up lost motion or wear. The bolts 23 maybe loosened slightly topermit the member 17 to slide along the angle iron 14 to ad- 5 just the members 17 a proper distance apart,

thereby providing'means whereby the free end ofthe bar may swing freely aboutthe bolt 22 as an axis, and at the same time have its free end held against lateral movement. 5,

Slidably mounted on the free end of the bar 24 isa scraper blade 26 formed of a flat piece of metal i having its outer end formed fiat,

while its inner end has its edges provided with rolled portions 27 in the manner 'illus- $3 trated in F gures 3 and5 to form guides for bers27 is a bridge member 28 welded in position. Openings 29. aredrilled through the 1 00 to receive a brake pin 31 preferably formed of hard wood, in such manner that if excessive pwa d and --Q .1?Ward .len dine Presure is app ied lzd the c aipei iblade'fifi,t en the pin 31 will be sheared, permitting the member 26 to move longitudinally of the member 24, and thereby permitting t-li'e edge of the scraper to disengage rill; Le f.

. wheel 10.

The scraper blade is supported in a downwardly and inwardly 'incl'in d posi'tion, as illustrated in Figure- 1,.with its free end.en-. gaging'the rim by means of achainl32, one end of which .is conneqtedto. thememher 26' andits opposite vend jg o .the.;member 13 by means of a bolt-33."

Thus itwill be seen-that I have provided a scraper attachment for tractors. whichv may be easily and quickly applied to the lower edge of .the mud guard'13 by means. ogELthe clamps 17, the bladeibeing supported iii position bythe chain 32. -.The blade 26. is de: signed to engage the rim l0v between-the rows of lugs 15 in a tangent manner, so. that. as the rim 10 .is rotated in a clockwise dirention, as illustrated in Figure 1, any dint-clinging to the 'rim will be scraped-therefrom, and at the same time clean the'spaces between the adjacent lugs 15.."

By forming the members 24; and 2.6. of sheet inetahit .will beseen that'said members may he built comparatively cheap "and at the. same time be very strongfand light. a

' By .provi gthe brake'pin 31., means is provided whereby the scraper. blade willzbe protected against injury in case it should en:- gage chunks bf earth frozen-td=tlaev rim of the wheel, prrivet Jor-i bolt heads carried thereby. a

'By providing the. chain 82 for supporting theqfree end of the scraper blade, means is proyided for adjusting the. distan'cethat the free. edge oithe'blade'will operate from the rim. 1.0.. Under ordinary conditi ns, 1

blade Yery closets the rij lclaim as myi'nventi i V 1 A s raper. attachment for tractor h l mmprising: Pei? Of clamp. members, a i ti iper. bar. 'pi otally mounted between the clamp members, a. scraper blade slidably ever, it is; desirable. to eperate. thescraper carried by the free ends of said clamps, a scraper bar supported between said clamp members and to said pivot member, a scraper blade having its sideedges rolled over the edges of said bar for slidably supporting said blade relative thereto, a bridge member enneqtingih iree edg s of said ro led P r- 'ieas', aidibr d e.m mber,$he bla e and Said bar being provided with openings for receiving a brake pin, abrake pin for said open- "ings, and mans 'for supporting the scraper blade ,tangentiall to the rim of a tractor.

' "8LIn'a scraper 1 attachment for tractors comprising a clamp members, each of'sai'd clamps lncluding a member having a Amok. nort e one end an its .eppes end rovid d with a reeess e seeetin sleiep memher hav g a recess i on an epn ite the fi st re ess, a First e elhel? Carried by said-re esses, .2 bolt. fier each 92 sa d slam f r' damping the elempm mhe s be sa d ivot membe and i th lens? ed e of asunpo t ng. member, s ene? ba supre ted b ween sai lamps an iiia tal meuntee .1 said pire member, se aper hlade L eeblY mounted on ai belt, a br ke Pi or ear serene s id bladeetit ente poet ca of m v m t, and me ns f r supp ti g said blade n contes ith th i f me e wheel.

f A scr per ette meet r t d rs com prisi g a u p rsa r, mean for piv telly at a n passed sf s id ar o ass tst rame e ap lad ha n it Sid e es r lledi he eorre re d n' side edges 0 seislbar in slightly supp r ing-sa d blade relative to sa d he e bri mem erl on ne t n he ee ed eeef a d e l si 'p-or o said br des m m er as blade eed'sa dbex be n pause w t eni gsfo reedine e b ake P n e brak pin n sa d. QPfiIliQg and means r e r eriin t e 'serep rblale tan tiall t9 the' im 9 a rader eel JQHN A; an NQQY,

mounted 1.oligitiidiually, 0.15 the. scraper b i a. brake. pin or. securing the. scraper blad at its perative pesi ion onsa d bar, and a chain 1 I is: support ng sa dse aper blade in opera ti e. elation. with th rimoi a actor Whe x 2. A scraperjattachment for tractor wheels, comprising a pair of clamp members designed to clamp the lower edgeiof the mud guard on tractor, means for adjustably clamping 7' said members to said guard, apivot member y no 

